Valve.



E. J. BOLT.

VALVE. APPLlCATiON FILED 00115, 1916.

Patented May 29, 1917.

INVENTOR WITNESSES ATTORNEY ERNEST J. BOLT, 0F ALLENTOWN, PENNSYLVANIA.

VALVE.

Specification of Letters Patent.

Patented Ma an, 1917.

Application filed October 6, 1916. Serial No. 124,143.

To all whom it may concern:

Be it known that I, ERNEST J. BoL'r, a citizen of the United States, residing at Allentown, in the county of Lehigh and State of Pennsylvania, have invented certain new and useful Improvements in Valves, of which the following is a specification.

This invention relates to certain new and useful improvements in cut-offs or valves for gas pipes leading to gas or illuminating burners or gas stove burners and has for its main object, the provision of a safety valve which will lock automatically when opened or closed and prevent the handle of the valve from being moved by a person unconsciously pressing against the same, thereby reducing to the minimum the danger of the gas being turned on accidentally.

Another object of the invention resides in the provision of a safety cut-off or valve of the above stated character which will be of such construction that after being automatically locked, cannot be operated until the releasing stem is pressed downwardly and heldin this position to permit operation of the handle, thereby giving assurance against accidents with practically no inconvenience. V

A further object of the invention resides in the provision of a device of this character which will be of simple construction and operation as well as highly efiicient in use and which will include a spring actuated locking member adapted to be withdrawn by pressing upon a releasing stem when it is desired to either open or close the cut-off or valve.

A further object of the invention resides in the provision of a cut-off or valve of this character which will include a transversely movable locking member and a reciprocating releasing stem adapted to reciprocate longitudinally of the body of the cut-off or valve.

With these and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings and pointed out in-the appended claim.

In the accompanying drawings forming a part of this application and in which like designating characters refer to corresponding parts throughout the several views.

Figure 1 is an elevation of the improved cut-oft or valve, showing the same in open position and locked against movement in either direction.

Fig. 2 is longitudinal section on the plane of line 22 of Fig. 1, looking in the direction indicated by the arrow.

Fig. 3 is a transverse section on the plane of line 3-3 of Fig. 1, looking in the direction indicated by the arrow, and

Fig. 4 is a fragmentary detail elevation, showing the manner in which the device is locked in open position.

Referring more in detail to the drawings, 1 designates the body of the cut-off or valve which is adapted to rotate a limited distance in either direction within the casing 2, in the path of the pipe 3, said body 1 being provided with the usual transverse opening 4 adapted to register with the central passage of the pipe 3 when the cut-0E or valve is in open position. The body 1 has the usual depending reduced end 5 within which is secured the headed member 6 and around which are positioned the washers 7 and 8 bearing respectively against the end of the casing 2 and the head of the member 6. The usual spring 9 is also positioned between the washers 7 and 8 to resiliently retain the body 1 in its lowermost position within the casing 2. A conventional form of handle 10 is also provided for the upper projecting end of the body 1, the handle 10 being preferably of hollow form and secured by means of a headed screw 11, the pointed end of which extends into the recess 12 formed in the upper end of said body 1.

Reciprocally mounted in the body 1 is the releasing stem 12, which has a reduced neck portion 13 adjacent its upper end and within the recess 12, whereby the end of the screw 11 may limit vertical movement of said releasing stem 12. The stem 12 has a pointed lower end 14, which is adapted to work in the V-shaped recess 15 in the upper face of the transversely movable locking bolt 16, which latter is positioned in a transverse recess 17 in the body 1, said recess-17 extending at right angles to the opening 4:. This locking bolt 16 is substantially T- shaped and includes a reduced lower portion, providing a depending central lug 18, against one end of which is engaged a spring 19, the opposite end of which engages the inner wall of the casing 2, just below the opening 20 in the upper edge of said casing and within which opening 20 moves the pin 21, which limits rotation at the body 1 1h .7

either direction, by engagement of said pin 21 with the opposite end walls of said opening 20. A second opening 22 is formedin the upper edge of the casing 2, opposite one end of the opening 20, to receive one end of the locking bolt 16 when the cut-cit or valve is in opeh position and thereby lock the body 1 against movement in either direction.

When'the valve or cut-off is in open position and the locking bolt l6 is within the opening'22, the pin 21 is engaged against one end wall of the opening 20 and the pointed end 14 of the releasing stem 12 is at one end of the V-shaped recess 15, as shown in Fig. 2. To open the valve or cut- Off, the stem 12 should be pressed clown- 'wardly, thereby drawing inwardly the looking bolt 16 and compressing the spring 19. The body 1 may then be rotated to open position, carrying the pin 21 into engagement with the opposite end Wall of the opening 20. Then, as soon'as the stem 12 is relieved of pressure, the spring 19 will act to'force outwardly'the locking bolt 16 with one endin the opening 20. Any movement of the body 1 toward open'position will then be prevented, owing'to engagement of the lockingbolt 16 with the end wall of the opening 20 from which the pin 21 had been moved, during movement of the 7 body lto closed position.

1 From the foregoing, it will be evident that I have provided a cut-off or valve which is especially adapted for use in connection with, gas pipes and the like and which will be securely and automatically locked in either closed or open position and cannot be moved in either direction until operation of the releasing stem to draw inwardly the locking bolt 16.

rl/Vhile the form of the invention shown and described is what is believed to be the preferred embodiment thereof, it is never- I theless to be understood that minor changes may be made therein in the details of con struction and arrangement of parts, without departing from the spirit of the invention as claimed.

I claim:

In a valve, a casing provided with inlet and outlet ports and'having an elongated recess at its upper edge, and further provided with a bolt receiving opening, a rotatable p, valve mounted in the casing provided with a port adapted to register with the ports in the casing, and further provided with a transversely extending substantially rectangular opening which communicates with the elongated recess, a pin carried by the valve and projecting within the elongated vrecess and adapted to abut the end walls of the same to limit the movement of the valve, a T-shaped bolt slidable in the rectangular recess, an expansible spring mounted in the latter recess and bearing against the inner face of the casing and the slidable bolt beneath the horizontal bar of the same and normally urging the bolt to a position to engage the horizontal bar in the bolt receivingopening and the vertical bar against the casing, the pin engaging the end wall nearest the bolt receiving opening of the elongated recess simultaneously with the projection of the slidable bolt into the bolt Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

\Vashington, D. C. 1 i 

